Pipe freezing device

ABSTRACT

A pipe freezing device comprising a chamber to surround the pipe at the desired point of freezing, a source of Freon or the like liquid under pressure, and a valve for directing gas from the liquid into the bottom portion of the chamber against the pipe, the chamber having a vent for the gas.



1. A pipe freezing device comprising an annular chamber having an outercircumferential wall and side walls thereon, and an open inside aspect,means removably securing the chamber about the pipe to be frozen, withthe open inside aspect of the chamber contiguous with respect to thepipe and the side walls closely embracing the pipe, a source ofgas-forming liquid under pressure, a tube adapted to connect the sourceto a wall of the chamber, and a vent in the chamber for the gas, saidvent being remote from the tube so that the gas-forming liquid and gasformed therefrom extend about the pipe to be frozen, the gas escapingfreely to the atmosphere through the vent.
 2. The device of claim 1wherein the outer waLl and the side walls are integral, yieldable, andresilient, and a slit through the walls and into the chamber throughwhich the pipe enters the chamber by causing the walls to yield.
 3. Thedevice of claim 1 including shaped pipe fitting openings in the sidewalls.
 4. The device of claim 3 including outstanding divergent guidelips at the sides of the slit in the outer wall.
 5. The pipe freezingdevice of claim 1 including a handle for the chamber, and a valve forthe tube associated with the handle.
 6. The pipe freezing device ofclaim 5 including means on the handle to control the valve.
 7. The pipefreezing device of claim 6 wherein the last named means is rectilinearlymovable, and including means to move the same by rotation of the handle.8. The pipe freezing device of claim 1 including a handle connected to awall of the annular chamber, the tube extending through the handle. 9.The pipe freezing device of claim 8 wherein the handle is elongated andincludes wall portions about the tube spaced from the tube.